Since last May, the number of CISG Contracting States stands fast at 70. During that same span, the number of signatories to the CUECIC has increased from 10 to 18 with the additions of Colombia, Honduras, Iran, Montenegro, Panama, Philippines, Republic of Korea, and Saudi Arabia. However, because none of the signatories have yet ratified or acceded to the CUECIC, it is not yet in effect in any country; whereas, depending on one's opinion on the effect of the U.S. Supreme Court's recent Medellin decision on the viability of the CISG in the United States, the CISG is in effect in either all of its Contracting States (except in transactions in which the parties have expressly contracted out of the CISG) or all of them except the U.S. (except in transactions in which the parties have expressly contracted into the CISG).